How are records stored in an ESDS, entry sequenced dataset?
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Answer Posted / guest
They are stored without respect to the contents of the
records and in the order in which they are included in the file.
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what how do you initialize a vsam file before any operation? A vsam with alternate index?
we can define the ksds cluster by two ways by using the file-aid or by using the idcams utility. Explain them.
what do you mean by gdg in vsam?
What are the building blocks used in vsam datasets?
What are the distinctive features of a ksda, key sequenced dataset?
how do you define an altindx ? How do you use altindxs in batch, cics programs?
is it necessary that all versions of the gdg have to be of the same record length?
What are the different versions of gdg named?
Explain about the file objects in vsam?
Yes. Because the alternate key would first locate the primary key, which in turn locates the actual record. Needs twice the number of I/Os.
On which dataset you can have alt index?
Explain the significance of the shareoptions parameter?
If fspc(100 100) is specified does it mean that both the control interval and control area will be left empty because 100 % of both ci and ca are specified to be empty?
can you specify some the distinctive features of a ksds, key sequenced dataset?
is it required that primary key values have to be unique? Do alternate key values have to be unique?
